Watermelon and raspberry ice cream sandwiches

Name: Watermelon and raspberry ice cream sandwiches
Prep time: 30 min
Cook time: 28 h 40 min
Total time: 28 h 40 min
Yield: 10 portions
Ingredients: 1 tsp vanilla bean paste; 800 g watermelon flesh; 100 g caster sugar; 150 g frozen raspberries; 380 g pouring (whipping) cream; 120 g full cream milk; 100 g rice malt syrup; 50 g pure maple syrup; 50 g puffed amaranth grain; 20 g puffed millet; 20 g shredded coconut; 1 tbsp poppy seeds; 1 tbsp sesame seeds; 1 tsp vanilla bean paste; oil